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/*******************************************************************************
* Copyright (c) 2011 Wind River Systems, Inc. and others. All rights reserved.
* This program and the accompanying materials are made available under the terms
* of the Eclipse Public License v1.0 which accompanies this distribution, and is
* available at http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tcf.te.tcf.processes.ui.internal.dialogs;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;
import org.eclipse.core.runtime.Assert;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.dialogs.StatusDialog;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.tcf.te.tcf.processes.ui.activator.UIPlugin;
import org.eclipse.tcf.te.tcf.processes.ui.internal.preferences.IPreferenceConsts;
import org.eclipse.tcf.te.tcf.processes.ui.nls.Messages;
/**
* The dialog to configure the refreshing interval of the process list.
*/
public class IntervalConfigDialog extends StatusDialog implements ModifyListener, IPreferenceConsts {
// The text field to enter the interval value.
private Text text;
// The entered result
private int result;
/**
* Constructor
*/
public IntervalConfigDialog(Shell parent) {
super(parent);
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.dialogs.StatusDialog#configureShell(org.eclipse.swt.widgets.Shell)
*/
@Override
protected void configureShell(Shell shell) {
shell.setText(Messages.IntervalConfigDialog_DialogTitle);
super.configureShell(shell);
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
*/
@Override
protected Control createDialogArea(Composite parent) {
Composite composite = (Composite) super.createDialogArea(parent);
Composite comp1 = new Composite(composite, SWT.NONE);
GridData data = new GridData(SWT.FILL, SWT.CENTER, true, false);
comp1.setLayoutData(data);
GridLayout layout = new GridLayout(3, false);
layout.horizontalSpacing = 0;
comp1.setLayout(layout);
Label label = new Label(comp1, SWT.RADIO);
label.setText(Messages.IntervalConfigDialog_ChoiceOneLabel);
text = new Text(comp1, SWT.SINGLE | SWT.BORDER);
text.setTextLimit(Text.LIMIT);
data = new GridData();
data.widthHint = 70;
text.setLayoutData(data);
text.setText(""+result); //$NON-NLS-1$
text.selectAll();
text.setFocus();
text.addModifyListener(this);
label = new Label(comp1, SWT.NONE);
label.setText(Messages.IntervalConfigDialog_SECONDS);
return composite;
}
/**
* Check if the current input is valid and return an IStatus object to return
* the checking result, containing the message and the validating code.
*
* @return A status to indicate if the input is valid.
*/
private IStatus isInputValid() {
String pluginId = UIPlugin.getUniqueIdentifier();
String txt = text.getText();
if (txt == null || txt.trim().length() == 0) {
return new Status(IStatus.ERROR, pluginId, null);
}
try {
int interval = Integer.parseInt(txt.trim());
if (interval < 0) return new Status(IStatus.ERROR, pluginId, Messages.IntervalConfigDialog_BiggerThanZero);
if(interval == 0) return new Status(IStatus.WARNING, pluginId, Messages.IntervalConfigDialog_ZeroWarning);
}
catch (NumberFormatException e) {
return new Status(IStatus.ERROR, pluginId, Messages.IntervalConfigDialog_InvalidNumber);
}
return Status.OK_STATUS;
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.dialogs.Dialog#okPressed()
*/
@Override
protected void okPressed() {
String txt = text.getText().trim();
result = Integer.parseInt(txt);
super.okPressed();
}
/**
* Get the input result, a time interval.
*
* @return The input result.
*/
public int getResult() {
return result;
}
/**
* Validate the current input and update the button and the error message.
*/
private void validateInput() {
IStatus status = isInputValid();
updateStatus(status);
}
/**
* The label provider used to display the speed grades in the combo viewer.
*/
static class GradeLabelProvider extends LabelProvider {
@Override
public String getText(Object element) {
if(element instanceof IntervalGrade) {
IntervalGrade grade = (IntervalGrade) element;
return grade.getName() + " ("+grade.getValue()+" "+Messages.IntervalConfigDialog_SECOND_ABBR+")"; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
}
return super.getText(element);
}
}
/**
* Get the current the speed grades in an array of Grade.
*
* @return The current speed grades.
*/
IntervalGrade[] getGrades(){
List<IntervalGrade> gradeList = new ArrayList<IntervalGrade>();
IPreferenceStore prefStore = UIPlugin.getDefault().getPreferenceStore();
String grades = prefStore.getString(PREF_INTERVAL_GRADES);
Assert.isNotNull(grades);
StringTokenizer st = new StringTokenizer(grades, "|"); //$NON-NLS-1$
while(st.hasMoreTokens()) {
String token = st.nextToken();
StringTokenizer st2 = new StringTokenizer(token, ":"); //$NON-NLS-1$
String name = st2.nextToken();
String value = st2.nextToken();
try{
int seconds = Integer.parseInt(value);
if(seconds > 0) {
gradeList.add(new IntervalGrade(name, seconds));
}
}
catch (NumberFormatException nfe) {
}
}
return gradeList.toArray(new IntervalGrade[gradeList.size()]);
}
/*
* (non-Javadoc)
* @see org.eclipse.swt.events.ModifyListener#modifyText(org.eclipse.swt.events.ModifyEvent)
*/
@Override
public void modifyText(ModifyEvent e) {
validateInput();
}
/**
* Set the current interval to the text field.
*
* @param interval The current interval.
*/
public void setResult(int interval) {
this.result = interval;
}
}
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